digestive system

Question 1

mouth

Answer 1

intake of food

Question 2

buccal cavity

Answer 2

mastication of food, forming a moistened bolus, beginning digestion of starch with enzyme ptyalin

Question 3

pharynx

Answer 3

passage for swallowing chewed food from mouth to oesophagus

Question 4

oesophagus

Answer 4

convey liquid and chewed food (bolus) to the stomach by peristalsis action

Question 5

stomach

Answer 5

receive, store, mix, digest ingested food product and initiate the digestion of protein

Question 6

small intestine

Answer 6

complete digestion and absorption of nutrients

Question 7

large intestine

Answer 7

reabsorption of water from residual contents

Question 8

anus

Answer 8

elimination of faeces

Question 9

functions of liver

Answer 9

1. secretion of bile
2. conversion of ammonia to urea
3. storage of glucose as glycogen
4. dispose toxic substances
5. serve in protein synthesis

Question 10

function of pancreas

Answer 10

1. exocrine: (acinar cells)
   secretion of pancreatic juice containing several enzymes
2. endocrine : (islet of langerhans)
   secrete hormones insulin and glucagon